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X 的代码
ch6_2.m
X='-10x^2+8x^2-x^3+4x^5+x^3-10+9-x^7';
P=str2poly(X)
Str=poly2str(P)
ch2_100.m
x = strmatch('max', strvcat('max', 'minimax', 'maximum'))
ch2_101.m
x=rand(1,10);
disp(['向量x中的最大值为:' num2str((max(x)))]);
ch2_3.m
x=5;
z=complex(x);
ch2_2.m
x=5;
y=10;
z=complex(x,y);
ch2_79.m
x = (b ~= 0) && (a/b > 1)
eg10_5.m
x=[2,3,1,4,5];
h=[2,1,7,4,5,7,2,3];
lenx=length(x);
lenh=length(h);
N=lenx+lenh-1;
xk=fft(x,N);
hk=fft(h,N);
yk=xk.*hk;
y=real(ifft(yk));
plot(y);
xlabel('n');
ylabel('y(n)');
title('x(n)*